Feb 03, 2016· It is so hard to tell from a photo, but it looks like gold. Sulfides like pyrite and chalcopyrite dont react quickly to acids. If it were chalcopyrite, you would have blue staining on the rock from the copper in the chalcopyrite. So its likely either gold or pyrite.

pyrite in the ore, the effect becoming more intense when the feed ore particles are fine (Yong, personal communication). In this study, a model mineral system comprising different proportions pyrite and chalcopyrite was studied to investigate the effect of pyrite content in chalcopyrite

And whether chalcopyrite is china, europe, or africa. There are 315 chalcopyrite suppliers, mainly located in Asia. The top supplying countries or regions are China, Peru, and United Kingdom, which supply 95%, 1%, and 1% of chalcopyrite respectively. Chalcopyrite products are most popular in North America, South America, and Africa.

The flotation of chalcocite, bornite, chalcopyrite, and pyrite has been studied in a microflotation cell in which the potential of a bed of the mineral particles could be controlled electromechanically. The ethylxanthateinduced flotation of each mineral is markedly dependent on electrochemical ...

Aug 9, 2018 The mineral pyrite, or iron pyrite, is an iron sulfide. This mineral's metallic luster has earned it the nickname fool's gold because of its resemblance to gold. Pyrrhotite is an unusual iron sulfide mineral with a variable iron content: Pyrrhotite is also called magnetic pyrite because the color is similar to pyrite and it is weakly magnetic.

A similar observation has been made for the interaction of biosolids with chalcopyrite, molybdenite and pyrite, although a weaker interaction such as hydrogen bonding or van der Waals force was proposed for the interaction of humic acid with these sulphide minerals [27,60]. The higher adsorption of HA than TA on the minerals surface may also be ...

Chalcopyrite is the most important primary ore of copper. A large portion of the copper produced in the world is obtained by the smelting of chalcopyrite and the ores associated with it. Return to the Mineral Collectors Information Page

Marcasite and Pyrite. A mineral is defined both by its chemical composition and its crystal structure. In some cases two different minerals have the same chemical composition, but different crystal structures. Known as polymorphs, these intriguing cases illustrate how the different crystal structures can result in quite different physical ...

This study was aimed to investigate the galvanic interaction between pyrite and chalcopyrite with two types of grinding media (low alloy and high carbon chromium steel ball) in grinding of a porphyry copper sulphide ore. Results indicated that injection of different gases into mill altered the oxidationreduction environment during grinding.

The pH during biooxidation of pyrite tends to decrease as a whole, whereas a risefall pattern was recorded for both chalcopyrite and pyrrhotite in their pH variations. No deposition was observed during the biooxidation of pyrite, suggesting a possible link to lower pH value in the process.

The rejection of pyrrhotite and pyrite has become a longstanding problem in the copper ore industry. This paper describes the first successful depression and adsorption mechanism of a novel and nonhazardous reagent, polyglutamic acid (PGA), on pyrrhotite in the selective flotation of chalcopyrite with xanthate as the collector, making use of various laboratoryscale measurement techniques.

energy difference of SBX adsorption between chalcopyrite and pyrite compared to the NaOH system, facilitating the flotation separation of chalcopyrite and pyrite. The results can help with the theoretical research of flotation separation of other minerals, and provide guidance for developing low alkaline and limefree pyrite depressants.

Locality: 9th September (Deveti Septemvri) mine, Madan ore field, Rhodope Mts, Smolyan Oblast, Bulgaria. Size: 82 x 26 x 57 mm. Small cabinet specimen In very good condition

Misreported pyrite into copper concentrates dramatically declines copper grade and its recovery. In this study, the effect of sodium sulfide, sodium metabisulfite (SMBS), and their dosages (100, 200, 300, and 400 g/t) were investigated on chalcopyrite and pyrite floatabilities in a high pyritic copper sulfide ore.

Chalcopyrite is brittle and has a greenish gray streak. Pyrite is hard enough that it cannot be scratched with a nail, but chalcopyrite is easily scratched with a nail. Uses of Chalcopyrite. Chalcopyrite is a fairly common mineral, and therefore only the finest of localities will be mentioned.

The weathered chalcopyrite attracts attention and some mineral shops will sell it as "peacock ore", which is actually bornite. Chalcopyrite has a similar appearance as pyrite and gold, but distinguishing the difference is easy. Gold is softer and has a yellow streak. Pyrite cannot be scratched with a nail, but chalcopyrite can be easily scratched.

Apr 17, 2010· Flotation test results indicate that DLZ is the selective collector of chalcopyrite. Especially, the recovery of chalcopyrite is higher than 90% in neutral and weak alkaline systems, while the recovery of pyrite is less than 10%. When using CaO as pH regulator, at pH=7–11, the floatability of pyrite is depressed and the recovery is less than 5%.

The pyrite in which small amounts of gold occurs is of crystalline variety (primary pyrite). The characteristics of primary pyrite are a absence of porosity, an extreme brittleness, a resistance to oxidation, and the existence of gold possessing a weak susceptibility to magnetism (due to a fine coating of a iron compound).

Pyrite recovery was sharply increased by the addition of sodium sulfide in light of sodium sulfideinduced collectorless flotation; however, it showed a very weak effect on chalcopyrite floatability. In addition, the highest and lowest chalcopyrite and pyrite recoveries were, .

The sulfide minerals in the ore are chalcopyrite and pyrite and the gangue is siliceous. The flowsheet is designed for the production of a high grade copper concentrate followed by the production of a clean pyrite concentrate for further treatment to recover the gold values.

GALENA SPHALERITE CHALCOPYRITE. A large specimen with outstanding crystal formations of Galena Sphalerite Chalcopyrite, Pyrite and Quartz. This is a spectacular museum quality specimen displaying stunning crystals. A very collectable metal specimen with well formed crystal structures of several types.

So, what's with the weird name "Pyrrhotite" and is it similar to Pyrite? Yes, they are similar. They are both iron sulfide minerals. The difference between the two is that pyrrhotite has variable amounts of both iron and sulfur and pyrite does not. Pyrite is a constant FeS2 (one atom of iron and 2 atoms